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Ten years of Swift: A universal scaling for short and long gamma-ray bursts (EX,iso - Eγ,iso - Epk)

Date Issued
2015
Author(s)
Zaninoni, Elena
•
•
Margutti, Raffaella
•
DOI
Abstract
From the comprehensive statistical analysis of Swift X-ray light-curves collected from the launch of the Swift satellite until the end of 2010, we found a three-parameter correlation between the isotropic energy emitted in the rest frame 1-104 keV energy band during the prompt emission (Eγ,iso), the rest frame peak of the prompt emission energy spectrum (Epk), and the X-ray energy emitted in the rest frame 0.3-30 keV observed energy band (EX,iso), computed excluding the contribution of the flares. The importance of this scaling law is that it is followed by both long and short GRBs, and, at the same time, involves prompt and afterglow emission quantities. Therefore there are some properties which are shared by long and short GRBs as a whole. We updated this correlation considering all GRBs observed until June 2014, confirming the existence of this scaling law, and examining some particular GRBs, as 090426 and 100816A. We also discuss the physics that is driving this correlation.
Coverage
The Second ICRANet César Lattes Meeting: Supernovae, Neutron Stars and Black Holes
All editors
Barres de Almeida, Ulisses; Chardonnet, Pascal; Picanco Negreiros, Rodrigo; Rueda, Jorge; Ruffini, Remo; Vereshchagin, Gregory; Zen Vasconcellos, César
Series
Volume
1693
Start page
050008
Conferenece
The Second ICRANet César Lattes Meeting: Supernovae, Neutron Stars and Black Holes
Conferenece place
Rio de Janeiro, Niterói, João Pessoa, Recife and Fortaleza, Brazil
Conferenece date
13-22 April, 2015
Uri
Url
Issn Identifier
0094-243X
Ads BibCode
2015AIPC.1693e0008Z
Rights
open.access
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